void udp_client_task(void const *argument)
{
while (host_port == 0) {
// Waiting for HOST port notification
}
DigitalOut indicator(LED2);
UDPSocket socket;
socket.init();
Endpoint echo_server;
echo_server.set_address(host_address, host_port);
//printf("[udp_client_task] Start: %s:%d\r\n", host_address, host_port);
while (1) {
std::string datagram;
bool sent_datagram = false;
cli_serv_mutex.lock(); // LOCK
if (datagram_queue.size() > 0) {
// POP from datagram queue
datagram = datagram_queue.back();
datagram_queue.pop_back();
sent_datagram = true;
}
cli_serv_mutex.unlock(); // LOCK
if (sent_datagram) {
//printf("[udp_client_task] Forwarded datagram: %s\r\n", datagram.c_str());
socket.sendTo(echo_server, (char *)datagram.c_str(), datagram.length());
forwarded_packets++;
indicator = !indicator;
}
}
}
void ethSetup()
{
EthernetInterface eth;
eth.init(); //Use DHCP
eth.connect();
printf("IP Address is %s\n", eth.getIPAddress());
udp.init();
udp.bind(5683);
udp.set_blocking(false, 10000);
}
int main() {
EthernetInterface eth;
eth.init(); //Use DHCP
eth.connect();
UDPSocket sock;
sock.init();
Endpoint multicast_group;
multicast_group.set_address(MCAST_GRP, MCAST_PORT);
char out_buffer[] = "very important data";
while (true) {
printf("Multicast to group: %s\n", MCAST_GRP);
sock.sendTo(multicast_group, out_buffer, sizeof(out_buffer));
Thread::wait(1000);
}
}
int main() {
bool result = false;
EthernetInterface eth;
eth.init(); //Use DHCP
eth.connect();
printf("UDP client IP Address is %s\n", eth.getIPAddress());
UDPSocket sock;
sock.init();
Endpoint nist;
nist.set_address(HTTP_SERVER_NAME, HTTP_SERVER_PORT);
char out_buffer[] = "plop"; // Does not matter
sock.sendTo(nist, out_buffer, sizeof(out_buffer));
union {
char in_buffer_tab[4];
unsigned int in_buffer_uint;
};
const int n = sock.receiveFrom(nist, in_buffer_tab, sizeof(in_buffer_tab));
if (n > 0) {
result = true;
const unsigned int timeRes = ntohl(in_buffer_uint);
const float years = timeRes / 60.0 / 60.0 / 24.0 / 365;
printf("UDP: Received %d bytes from server %s on port %d\r\n", n, nist.get_address(), nist.get_port());
printf("UDP: %u seconds since 01/01/1900 00:00 GMT ... %s\r\n", timeRes, timeRes > 0 ? "[OK]" : "[FAIL]");
printf("UDP: %.2f years since 01/01/1900 00:00 GMT ... %s\r\n", years, timeRes > YEARS_TO_PASS ? "[OK]" : "[FAIL]");
if (years < YEARS_TO_PASS) {
result = false;
}
}
sock.close();
eth.disconnect();
notify_completion(result);
return 0;
}